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MEDIUM severity

CVE-2018-1000422 — crowd2

MEDIUMFix: jenkinsci/crowd2-plugin@a93d0fa

CVE-2018-1000422 is a medium-severity (CVSS 6.5) Server-Side Request Forgery (SSRF) vulnerability in org.jenkins-ci.plugins:crowd2. A fix is available for org.jenkins-ci.plugins:crowd2 — see the affected versions and patch details below.

Jenkins Crowd 2 Integration Plugin server-side request forgery vulnerability

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.8%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs56th percentile — riskier than 56% of all scored CVEsHighest risk
0.00%0.42%0.85%1.27%0.1%0.8%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕org.jenkins-ci.plugins:crowd2

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

An improper authorization vulnerability exists in Jenkins Crowd 2 Integration Plugin 2.0.0 and earlier in CrowdSecurityRealm.java that allows attackers to have Jenkins perform a connection test, connecting to an attacker-specified server with attacker-specified credentials and connection settings.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:crowd2all versions2.0.1org.jenkins-ci.plugins:crowd2:2.0.1

Affected Products

1 product · 1 configurations
Application
crowd2atlassian
≤ 2.0.0
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:crowd2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:crowd2 to 2.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-1000422 is resolved across your whole dependency graph.

  3. Workarounds

    Restrict outbound requests from the affected component to an allowlist of hosts, block access to link-local and internal address ranges at the network layer, and require authentication on internal services so a forged request cannot reach them unauthenticated.

Frequently Asked Questions

An improper authorization vulnerability exists in Jenkins Crowd 2 Integration Plugin 2.0.0 and earlier in CrowdSecurityRealm.java that allows attackers to have Jenkins perform a connection test, connecting to an attacker-specified server with attacker-specified credentials and connection settings.
O3 Security · Impact-Aware SCA

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CVE-2018-1000422: crowd2 — Fixed in 2.0.1